Mechanisms increasing welding efficiency during new development of double shielded TIG process

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	Mechanisms increasing welding efficiency during new development of double shielded TIG process
	D. J. Li; S. P. Lu; D. Z. Li; Y. Y. Li
	2010
发表期刊	Science and Technology of Welding and Joining
ISSN	1362-1718
卷号	15 期号:6 页码:528-533
摘要	A new welding method has been developed for the tungsten inert gas process which can both improve the weld depth/width (D/W) ratio and protect the electrode from oxidation during the welding process. The effects of the welding parameters and the Marangoni convection patterns on the weld pool shapes are discussed. Results showed that the change of welding parameters directly change the temperature distribution on the pool surface and the concentration addition of the surface active element, hence, eventually affect the pattern and strength of the Marangoni convection. For the liquid pool on stainless steel, the weld shapes depends to a large extent on the pattern and strength of the Marangoni convection. It is possible to generate a heavy oxide layer on pool surface under a relatively high oxygen content to affect the surface tension stress. The heavy oxide layer may inhibit the heat flow on the weld pool surface, and reduce the D/W ratio.
部门归属	[li, d. j.; lu, s. p.; li, d. z.; li, y. y.] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china.;lu, sp (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china;shplu@imr.ac.cn
关键词	Double Shielded Marangoni Convection Welding Parameters Oxygen Content Marangoni Convection Numerical-simulation Deep Penetration Shape Variations Activating Flux Oxide Fluxes Gas Gta Oxygen Geometry
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WOS记录号	WOS:000282748200015
引用统计	被引频次：8[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/31206
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	D. J. Li,S. P. Lu,D. Z. Li,et al. Mechanisms increasing welding efficiency during new development of double shielded TIG process[J]. Science and Technology of Welding and Joining,2010,15(6):528-533.
APA	D. J. Li,S. P. Lu,D. Z. Li,&Y. Y. Li.(2010).Mechanisms increasing welding efficiency during new development of double shielded TIG process.Science and Technology of Welding and Joining,15(6),528-533.
MLA	D. J. Li,et al."Mechanisms increasing welding efficiency during new development of double shielded TIG process".Science and Technology of Welding and Joining 15.6(2010):528-533.